A Novel Meander Line Microstrip Log-Periodic Dipole Antenna for Dual-Polarized Radar Systems

Song, Lizhong; Nie, Yuming; Wang, Jun

doi:10.2528/pierl15081403

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Various configurations of broadband LPDAs are reported in [27][28][29][30][31][32][33][34][35][36][37][38]. To make the LPDAs compact along the lateral dimension, meandered dipoles are used at the cost of reduced gain, and higher Xpols [31][32][33] or the dipole elements are loaded at the ends of the half dipoles at the cost of decreased gain [34]. The bandwidth of the LPDAs is limited by feed network, so various broadband feed networks are reported in [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Compact and Broadband Uniplanar Microstrip Antenna for Endfire Radiation

Rajbala¹

2022

PIER Letters

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A compact and broadband uniplanar Microstrip Antenna (MSA) is proposed for endfire radiation at sub-6 GHz 5G frequency band. The proposed antenna consists of a semi-elliptical radiating element and a U-shaped ground plane. The use of semi-elliptical radiating element results in a wide impedance bandwidth (BW) and compact size. The U-shaped ground plane further improves the bandwidth due to the increased coupling from radiating element to ground. An endfire radiation, 3.8 dBi peak gain, and 49.8% BW are achieved while a compact size of 0.47λ 0 × 0.13λ 0 × 0.008λ 0 (where λ 0 is the wavelength in free space at the center frequency) is kept. To validate the simulation results, prototype of the proposed antenna was fabricated and tested. The measured results are in good agreement with the simulated ones.

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Section: Introductionmentioning

confidence: 99%

Compact and Broadband Uniplanar Microstrip Antenna for Endfire Radiation

Rajbala¹

2022

PIER Letters

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Kablosuz haberleşme uygulamaları için boyutu küçültülmüş basılı log-periyodik çift kutuplu anten

Ozgonul

Seçmen

2020

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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The design of printed logperiodic dipole antenna for wireless communication systems  Size reduction by using first order semicircles in dipoles  Wideband, high return loss performance and low gain variation In this study, a printed log periodic dipole antenna (LPDA) depicted at left of Figure A is introduced. The antenna contains the modifications of feed point patch, semi-circle curves and slot for bandwidth and size improvements. The proposed LPDA provides sufficient return loss and gain performances within wide frequency band as shown at top right and bottom right of Figure A, respectively.Figure A. The photograph of the proposed LPDA (at left), S11 results of the proposed LPDA (at top right) and gain values of the designed antenna in the study (at bottom right)Purpose: The aim of this study is to design a compact size and wideband LPDA, which operates at several wireless communication applications. The proposed antenna is desired to have good return loss performance and almost constant gain over the operating frequency band. The antenna has the purposes of smaller size and wider bandwidth as compared to the standart LPDA and other printed LPDAs studied in the literature, which work at similar frequency bands. Theory and Methods:At the initial part of design method, theoretical formulations for log periodic antenna are used to obtain a standard LPDA around L-band. Then, feed point patches are added to increase the upper edge of the operating frequency band, and size reduction is achieved by using single semi-circle dipoles, which can be considered as first order iteration according to the fractal theory. Finally, rectangular slot located at the end of the feed line is inserted to increase overall of the frequency band of the proposed antenna. Results:Modifications (insertion of feed point patches, dipoles containing semi-circle curves and slots on the feed line) realized on the standard LPDA significantly increases the performance parameters of the proposed LPDA, and reduces the overall size. Accordingly, proposed LPDA is measured to give return loss values better than 10 dB and stable gain values (low gain variation) of 4.75 dBi ± 0.75 dBi at frequency band of 0,86 GHz -2,5 GHz, which includes popular wireless communication applications such as RFID, GSM, GPS, 3G, Bluetooth and 2.4 GHz Wi-Fi systems. Besides, a size reduction of about 14% is achieved as compared to the standard LPDA, and antenna dimensions smaller than antennas with Koch fractal shapes and the structures given in the literature are found. Conclusion:A compact, printed LPDA is designed, manufactured and measured. This novel antenna is concluded to have better performances (wider bandwidth, smaller size, lower gain variation) as compared to the standard LPDA and similar LPDAs in the literature. The proposed antenna can be a good candidate for wideband wireless communication applications, which include RFID, GSM, GPS, 3G, Bluetooth and 2.4 GHz Wi-Fi systems.

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A Novel Meander Line Microstrip Log-Periodic Dipole Antenna for Dual-Polarized Radar Systems

Cited by 2 publications

References 12 publications

Compact and Broadband Uniplanar Microstrip Antenna for Endfire Radiation

Compact and Broadband Uniplanar Microstrip Antenna for Endfire Radiation

Kablosuz haberleşme uygulamaları için boyutu küçültülmüş basılı log-periyodik çift kutuplu anten

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